I don't know if that would help, I have felt really really tired last days and after I eat often have to lie down or even have a nap.Can you get fortified cereals, @JTbo
? That might help. OJ has loads of potassium in it, but some of us sweat more than others.
Then I started thinking some common things and I found out that every time when I eat wheat or rye, I start to get tired.
I put everything I have eat into spreadsheet and found out that without knowing I have been following loosely Atkins diet, but now I have had to move into more what our official diet is, that is 60-65% carbon hydrates 15% of proteins and rest being fat, getting tired matches to dietary changes.
Then I started to think back a bit, last summer I felt quite great, but then i had no grain diet without me realizing it.
This all and some other things lead me to think that it has something to do with grain products, maybe I have glutamate intolerance or whatever that is called where one eating grain has effects of non eating at all.
Problem is then that with grain based diet I can get my daily food for less than 2 euros, but other diets are going close to 5 euros per day, which is way more than I can afford.
I can't even dream from cereals any more, I have to try to get needed calories with smallest amount of cost possible, also if I have to stay away from grain products in future I have no idea how I can meet my calorie demands.